Multifunctional Serial to Ethernet converter (USR-N540) File version: Ver1.0.5 Jinan USR IOT Technology Co., Ltd. works on LAN and WAN and wireless for MCU to Ethernet Solutions, Ethernet, WIFI, GPRS, and Wireless modules, we can supply custom design for those usage, looking forward to cooperate with you. Jinan USR IOT Technology Limited 1 / 40 tec@usr.cn
Content 1. Introduction...4 1.1. Overview...4 1.2 Features...4 1.2. Applications...5 1.3. Order information...5 1.4. Electrical characteristics...5 2. Simple Test...6 2.1. Hardware connection...6 2.2. Login...7 2.3. Default parameter test...9 3. Work mode... 10 3.1. UDP mode... 10 3.2. TCP Client mode... 11 3.3. UDP Server mode... 12 3.4. TCP Server mode... 14 3.5. Httpd Client mode... 16 4. Hardware... 19 4.1. Hardware introduction... 19 4.2. brief... 19 4.3. LED... 20 4.4. Reload key... 21 4.5. RS232... 21 4.6. RS485... 21 4.7. RS422... 23 4.8. RJ45... 25 5. Paramters configuration... 26 5.1. Web page... 26 5.2. Setup software... 27 6. Specific functions... 28 6.1. ModbusRTU to ModbusTCP... 28 6.2. Hardware flow control(rts/cts)... 29 6.3. MAC address... 30 6.4. Packet time and Packet length... 30 6.5. Sync baud via net(2217)... 30 6.6. Webserver port... 31 6.7. Module id and id type... 31 6.8. Device name... 32 6.9. Buffer data before connected... 33 6.10. Reset timeout... 33 6.11. Local IP config... 34 6.11.1. Static IP... 34 Jinan USR IOT Technology Limited 2 / 40 tec@usr.cn
6.11.2. DHCP... 34 6.12. DNS... 34 6.13. Comm param... 35 6.14. Username and password... 35 6.15. Firmupdate... 36 7. Contact... 39 8. Update History... 40 Jinan USR IOT Technology Limited 3 / 40 tec@usr.cn
1. Introduction 1.1. Overview The USR-N540 product series is an intelligent plug-and-play RS232/RS485/RS422 to Ethernet adapter that enables any device or machine with serial port, to become Ethernet network and Internet enabled, and have network data transmit ability. It features a powerful built-in device server, so you can access your serial device from anywhere in the world over internet! The USR-N540 is easily configured via local network, or through the serial port and web pages. We Provide Network products and the best service to our customers. Chips Modules Software Products 1.2 Features 1. Cortex-M4 kernel, industrial working temperature range(-40~85 ), elaborate optimization TCPIP protocol stack, stable and reliable. 2. selectable RS232/RS485/RS422 port, Different port can be used together, work independently, distinguish the connected serial port via port number. 3. Auto-MIDX function, discretionarily connect cross-over or direct network cable, automatic switching. 4. Support TCP Server, TCP Client, UDP, UDP Server, HTTPD Client,websocket, various of ethernet protocols. 5. Support virtual serial port, provide corresponding software. 6. Serial port highest baud rate from 600bps to 230.4Kbps. 7. wide voltage input, more applications. 8. Support DHCP, automatically access IP, can inquire the facility within network through the setup software. 9. Supply the protocol for VIP customers 10. Provide PC TCP/IP SOCKET programming example, VB, C++, Delphi, Android, IOS. 11. A built-in web page, also parameter setting via web, can customize web pages for users. 12. Can also set via UDP broadcast, provide the set up protocol. 13. Reload button, a key restore default Settings. 14. RJ45 status indicator light, RJ45 interface built-in isolation transformer, 2 KV isolation. 15. The global unique MAC address bought from IEEE, the user can define MAC address (please state when you make order). 16. Support upgrade firmware via network. 17. Support remote IP and domain name at the same time 18. Support up to 8 link from client when act as TCP Server, same data will be send to all client. 19. Can modify http server port from default port 80 for module built-in http server. 20. Support Keepalive, detect a dead link quickly and make sure the connection more stable. Jinan USR IOT Technology Limited 4 / 40 tec@usr.cn
1.2. Applications Fire and Security Panels Vending Machines Point of Sale Terminals Remote equipment management IT management services Access Control Industrial Control Home Automation Instrumentation Building Control Power Management 1.3. Order information Type Part Numbers Electric interface Serial to Ethernet Converter USR-N540 4 * RS232/RS485/RS422 Figure 1 Diagram 1-1 Order information 1.4. Electrical characteristics Working tempterature range: -40~85. Unpowered storage temperature and humidity range: -65~150, 5~95%RH Input voltage range 12V average current USR-N540 DC9~24V 53mA Jinan USR IOT Technology Limited 5 / 40 tec@usr.cn
2. Simple Test If you have any question, please contact us the in the client support center: http://h.usriot.com/index.php?c=frontticket&m=sign 2.1. Hardware connection The picture below is device picture. Diagram 2-1 USR-N540 with case Connect device s RJ45 to PC with network cable Be sure your PC s network configuration is static ip 192.168.0.201, netmask 255.255.255.0, gateway 192.168.0.1 Connect device s first RS232 port to PC via USB to RS232 converter Power device with DC12V Here is device's default network configuration, IP address: 192.168.0.7 Subnet mask: 255.255.255.0 The default gateway: 192.168.0.1 Jinan USR IOT Technology Limited 6 / 40 tec@usr.cn
2.2. Login Open a browser, type and Login above IP address http://192.168.0.7, you will enter module's setup web pages. User name and password are both admin, this can be modified after login into the system. Default user name: admin Default password: admin Jinan USR IOT Technology Limited 7 / 40 tec@usr.cn
After you have login, you can see webpage as follow, this is config page. Figure 2 Diagram 2-2 page after login name Current status Local IP config Port1 Port2 Port3 Port4 Web to Serial Misc Config Description display of firmware revision, ip address and mac address Config for local ip address Config for first serial to ethernet Config for second serial to ethernet Config for third serial to ethernet Config for fourth serial to ethernet Config for Web to serial Config for device name, username,password Jinan USR IOT Technology Limited 8 / 40 tec@usr.cn
Reboot Reboot device via webpage 2.3. Default parameter test To test briefly in default working mode, on the foundation of the hardware connection, use the matched software USR-TCP232-Test to make transmitting and receiving test. The left side is serial port, use software default settings, the right side is the network part, set to workmode TCP Client, remote server address 192.168.0.7, remote port 23. This illustration shows the 10 ms two-way simultaneous automatically transmit screenshots. As the allocated memory of the display control is limited, in order to test large amount of data transceiver, here will suspend the receive display, only statistical data. Below is the effect after testing for a few hours, and transmitting millions of bytes. Stable and reliable, without a byte loss. Jinan USR IOT Technology Limited 9 / 40 tec@usr.cn
Figure 3 Diagram 2-3 default working mode communication 3. Work mode 3.1. UDP mode When in UDP mode, after power on, module will connect to remote server's specific port. When received data from the remote server, module will send it to serial port; otherwise, when data is received from serial port, send it to ethernet. The assist software can be download from link below: http://www.usriot.com/download/199.html Jinan USR IOT Technology Limited 10 / 40 tec@usr.cn
Figure 4 Diagram 3-1 UDP mode communication test Note: local port and remote port can be different. Max UDP send length(ethernet to serial) is 1472 bytes. If you want to send more than 1472 Bytes, please div it into shorter packet. 3.2. TCP Client mode Open web pages and config module to Work Mode: TCP Client Remote port number: 23 remote server addr: 192.168.0.131 Jinan USR IOT Technology Limited 11 / 40 tec@usr.cn
Figure 5 Diagram 3-2 TCP Client mode Figure 6 Diagram 3-3 TCP Client communication test 3.3. UDP Server mode Like the socket UDP server in pc API. Many to one data transfer supported, the data from uart/232/485 Jinan USR IOT Technology Limited 12 / 40 tec@usr.cn
part will be transformed to the last UDP packet s address. USR-N540 User Manual www.usriot.com Here show 2 UDP client communicate with server, server send data to the last client communicates with it. Figure 7 Diagram 3-4 Client 1 <-> server Jinan USR IOT Technology Limited 13 / 40 tec@usr.cn
Figure 8 Diagram 3-5 Client 2 <-> server 3.4. TCP Server mode TCP Server mode have max 8 client connected at max; When act as TCP server, only local port matters, Jinan USR IOT Technology Limited 14 / 40 tec@usr.cn
Figure 9 Diagram 3-6 select workmode TCP server Figure 10 Diagram 3-7 test result, we can establish more than 1 client to test Jinan USR IOT Technology Limited 15 / 40 tec@usr.cn
3.5. Httpd Client mode This function is easier used for webpage developer. We establish one web server page, add this: [<?php echo $_GET['data'];?>] Means we can GET data from HTTP client s request. Open this URL: www.usr.cn/1.php?data=12345, the web page is downbelow, we can see that the web server have got the data(12345), Figure 11 Diagram 3-8 Request www.usr.cn/1.php? and upload data Then we take another way, set module Work mode HTTPD Client, Target address www.usr.cn, Target port 80. Jinan USR IOT Technology Limited 16 / 40 tec@usr.cn
Figure 12 Diagram 3-9 config HTTPD Client Open USR-TCP232-Test, and type in a string such as "12345", then send via comm port to device, and see the response from www.usr.cn. Jinan USR IOT Technology Limited 17 / 40 tec@usr.cn
Figure 13 Diagram 3-10 module act as HTTPD Client In the response, all the data returned, but the http header from server will be returned, too. the user may need to parse this to get your data. Jinan USR IOT Technology Limited 18 / 40 tec@usr.cn
4. Hardware 4.1. Hardware introduction 4.2. brief power supply range DC9V~24V, DC plug or 5.08-2 plug 4 port RS232/RS485/RS422, selectable by software Jinan USR IOT Technology Limited 19 / 40 tec@usr.cn
TX/RX LED for each port 4.3. LED Num name Description 1 Power Always on when powerd 2 Work Toggle every seconds 3 Link(green) Locate on RJ45, always on when cable plug 4 Data(yellow) Locate on RJ45, blink when there is data 5 TX1 Data TX pin for port 1 6 RX1 Data RX pin for port 1 7 TX2 Data TX pin for port 2 8 RX2 Data RX pin for port 2 9 TX3 Data TX pin for port 3 10 RX3 Data RX pin for port 3 11 TX4 Data TX pin for port 4 12 RX4 Data RX pin for port 4 Jinan USR IOT Technology Limited 20 / 40 tec@usr.cn
4.4. Reload key This key is Used for factory default. Pressed this key and keep it pressed, plug off power then plug in, wait for 5 seconds, then release the key. The device will restore to factory default settings. 4.5. RS232 All signal is shown in figure below, including RS232, RS485, RS422. Some pin have different function when they are working in different mode. No Name RS232 RS485 RS422 1 - - - - 2 RXD/A 232_RX - 422_A(RX+) 3 TXD/Z/B 232_TX 485_B 485_Z(TX-) 4 - - - - 5 GND ground Ground Ground 6 - - - - 7 RTS/Y/A Request to send 485_A 422_Y(TX+) 8 CTS/B Clear to send - 422_B(RX-) 9 - - - - 4.6. RS485 For RS485 mode,there must be 2 point customer to do. Firstly USR-PORT_COM, which is a small board from DB9 to RS485/RS422; Secondly, you need to select the corresponding mode RS485 in the setup software or webpage, the device work in RS232 mode by default. Jinan USR IOT Technology Limited 21 / 40 tec@usr.cn
After select RS485 mode in webpage, plug the USR-PORT-COM board onto device, then restart. Jinan USR IOT Technology Limited 22 / 40 tec@usr.cn
Connection diagram for RS485 is shown below, this is for 2-wire RS485. 4.7. RS422 For RS422 mode,there must be 2 point customer to do. Jinan USR IOT Technology Limited 23 / 40 tec@usr.cn
Firstly USR-PORT_COM, which is a small board from DB9 to RS485/RS422; Secondly, you need to select the corresponding mode RS422 in the setup software or webpage, the device work in RS232 mode by default. After select RS422 mode in webpage, plug the USR-PORT-COM board onto device, then restart. Jinan USR IOT Technology Limited 24 / 40 tec@usr.cn
The connection diagram for RS422 is shown below, 4.8. RJ45 device network interface is 10M / 100M adaptive, support AUTO - MDIX, can discretionarily connect cross-over or direct network cable. That is to say, you can use either kind of cable to connect with computer or other network Jinan USR IOT Technology Limited 25 / 40 tec@usr.cn
decice. Pin Name Description 1 TX+ Transceiver Data+ 2 TX- Transceiver Data- 3 RX+ Receive Data+ 4 n/c Not connected 5 n/c Not connected 6 RX- Receive Data- 7 n/c Not connected 8 n/c Not connected 5. Paramters configuration 5.1. Web page Device can be configured through web pages. After you make change, you have to restart device to make change take effect. Jinan USR IOT Technology Limited 26 / 40 tec@usr.cn
5.2. Setup software Down below is the Setup, http://www.usriot.com/download/90.html Jinan USR IOT Technology Limited 27 / 40 tec@usr.cn
Figure 14 Diagram 5-1 Setup software click Search Device ; Select device in search list; Modified paramters such as static ip; Click Base Save or Save COMx, paramters will be saved; After 2 second, Search again, module will appear in new paramters. 6. Specific functions 6.1. ModbusRTU to ModbusTCP just here: The whole series product support ModbusRTU to ModbusTCP. When you use it, you have to select the protocols, Jinan USR IOT Technology Limited 28 / 40 tec@usr.cn
Figure 15 Diagram 6-1 setup of ModbusTCP Here, the usement and function is presented below. 1. Selection None, that indicate we are using Transparent mode, no protocol convertion. 2. Selection ModbusTCP, means we use protocol convertion from Modbus RTU to ModbusTCP. 3. In the comm side(rs232 or RS485), it's ModbusRTU protocol, the ethernet side is ModbusTCP. 4. The ethernet side must be a Master, who send query frame first, and the Modbus RTU device respond with data to the command. The function acts as below. 6.2. Hardware flow control(rts/cts) If you want to use Hardware flow control, select it before using. RS232 interface support hardware flowcontrol(rts/cts) Pin name Description IO type Operater RTS Request to Send O module CTS Clear to Send I Outside device(pc) Figure 16 Diagram 6-2 Pin description When RTS = 0, enable the other side to send, at this time, TTL is 0 volt, RS232 is -3V ~ -15V. When CTS = 0, represent module is enabled to send, at this time, TTL is 0 volt, and RS232 is -3V ~ -15V. Jinan USR IOT Technology Limited 29 / 40 tec@usr.cn
When the logic is reverse, represent that disable the other side to send or was disabled the module to send. When connect with PC s RS232 interface, we can use the serial cable(cross). 6.3. MAC address In Current config and status, can see the currently MAC address in use. Diagram below is using the factory MAC. Figure 17 Diagram 6-3 currently MAC in use 6.4. Packet time and Packet length If packet time is 10ms, packet length 512 byte. Then it represent this meaning: If there is no data since the last char received during the past 10ms, the current data will be send to remote server. If the currently received data length exceed 512 byte, then the module will pack all the 512 byte and send to remote server. The pack mechanism would be triggered if there is either 1 condition meet them. If we set packet time and packet length to 0, then the module would use a mechanism of auto-packet, which have 4-byte-time packet time, and 1460 byte packet length(available only when firmware revision >= 3006). 6.5. Sync baud via net(2217) This is a function similiar to RFC2217(but different protocol), which can modify the device's comm parameters via ethernet(tcp or udp connection). This option is checked by default. Jinan USR IOT Technology Limited 30 / 40 tec@usr.cn
Figure 18 Diagram 6-4 sync baud 6.6. Webserver port The module have built-in webserver which allow user to setup parameters via webpage. Default port 80, but we could modify this port according to some special uses. 6.7. Module id and id type All module have a 2 byte id, default 1; id type default 0 Jinan USR IOT Technology Limited 31 / 40 tec@usr.cn
Figure 19 The id type have a mean as below. Diagram 6-5 module id and id type ID type 0(by default) description No use 1 When module act as client(tcp or udp), after it connect to server, send 4 byte immediately(2 byte Id + 2 byte Id-Complement, 00 01 FF FE by default); This can be used for USR-D2D service 2 add 4-byte before each frame send to server 3 Both 1 and 2 6.8. Device name User can modify this name, 15 chars max. Jinan USR IOT Technology Limited 32 / 40 tec@usr.cn
6.9. Buffer data before connected Figure 20 Diagram 6-6 buffer data or not Default not checked. That is before TCP connected, all the data comm port previously received, will be flushed. If checked, all the data comm port previously received would be saved and send to server after connected. 6.10. Reset timeout Jinan USR IOT Technology Limited 33 / 40 tec@usr.cn
Figure 21 Diagram 6-7 Reset timeout Default 0, unit is second. When this value between 0~60, the reset timeout function would be no use. When this value is higher than 60, the module will restart if there is no data received during this time. 6.11. Local IP config There is Static IP and DHCP, Static IP by default. Figure 22 Diagram 6-8 Local IP config 6.11.1. Static IP Type in the ip address you want to config, such as 192.168.0.10 (192.168.0.7 by default); Submask usually 255.255.255.0 Gateway usually 192.168.0.1 (your router's ip address) 6.11.2. DHCP Choose DHCP and save, then reset to take effect. The module will get it's ip address in 5-10seconds, after that you can search for it in the setup software. 6.12. DNS The module can visit both ip or remote domain name, user can type in the domain name in the IP box. The domain name max length will be 30 chars. Jinan USR IOT Technology Limited 34 / 40 tec@usr.cn
Figure 23 Diagram 6-9 domain name or IP 6.13. Comm param The baud ranges from 600bps to 230.4Kbps, user can define this to any value. For the serial device server of RS232 interface. Databit range 5, 6, 7, 8; Paritybit range None, Odd, Even, Mark, Space Stopbit range 1, 2 6.14. Username and password Default both "admin", max 5 chars. Figure 24 Diagram 6-10 Firmware revision Jinan USR IOT Technology Limited 35 / 40 tec@usr.cn
Figure 25 6.15. Firmupdate Use search and config software to update firmware, only once for one time, can not cross network segment. 1. Search and select one module 2. Device -> firmware update Figure 26 Diagram 6-11 search and select Jinan USR IOT Technology Limited 36 / 40 tec@usr.cn
Figure 27 Diagram 6-12 firmware update Click to start update progress. Jinan USR IOT Technology Limited 37 / 40 tec@usr.cn
3. Update success, click exit. Figure 28 Diagram 6-13 in update progress Figure 29 Diagram 6-14 success Note. After update, if can not search module, restore to factory will fix this problem. Jinan USR IOT Technology Limited 38 / 40 tec@usr.cn
7. Contact Company: Jinan USR IOT Technology Limited Address: Floor 11,Building1,No.1166 Xinluo Street,Gaoxin Distric,Jinan,Shandong,250101 China Tel: 86-531-55507297, 86-531-88826739 Web: http://www.usriot.com Support : http://h.usriot.com Email: sales@usr.cn Jinan USR IOT Technology Limited 39 / 40 tec@usr.cn
8. Update History 2015-10-29 V1.0.1 created 2015-11-03 V1.0.3 correct some error 2015-11-24 V1.0.6 add connection diagram for rs485, rs422 Jinan USR IOT Technology Limited 40 / 40 tec@usr.cn